2-111
Confidential
3.6.2 Pitch indicated in roller image
Image defects which occur periodically may be caused by a failure of the roller. By referring to
the table below, specify the cause based on the pitch indicated in the image of each roller.
3.6.3 Troubleshooting image defect
Image defect related problems are user recoverable if following the User Check items. If the
same problem occurs, follow each procedure in the order of the number described in the Step
column in the tables below.
■
Light on the whole page
Fig. 2-16
No.
Parts name
The pitch which appears in the image
1
Developer roller
30 mm
2
Exposure drum
94 mm
3
Heat roller in the fuser unit
78.5 mm
4
Pressure roller in the fuser unit
78.5 mm
<User Check>
- Check the machine’s environment. High temperature and high
humidity or low temperature and low humidity conditions can cause this
problem.
- If the whole page is light, toner save mode may be on. Turn off the
toner save mode.
- Wipe the scanner windows of the laser unit with a soft, lint-free cloth.
(Refer to the figure below.)
- Adjust the color calibration from the control panel.
- Replace the toner cartridge or drum unit with a new one.
- Adjust the color density from the control panel.
- Leave the machine for a while as the power remains ON.
Step
Cause
Remedy
1
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
2
Engine PCB failure
Replace the engine PCB ASSY.
3
Main PCB failure
Replace the main PCB ASSY.
4
Laser unit failure
Replace the laser unit.
5
Registration mark sensor
PCB failure
Replace the registration mark sensor holder
ASSY.
Содержание DCP-9055CDN
Страница 21: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Страница 36: ...Confidential CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 46: ...2 8 Confidential ADF part A4 model Fig 2 6 Left side Right side Document feed path Face up ...
Страница 47: ...2 9 Confidential ADF part Legal model Fig 2 7 Left side Right side Document feed path Face up ...
Страница 178: ...Confidential CHAPTER 3 DISASSEMBLY AND ASSEMBLY ...
Страница 206: ...3 25 Confidential 8 DISASSEMBLY FLOW Disassembly Re Assembly second ...
Страница 207: ...3 26 Confidential Disassembly Re Assembly second 5 ...
Страница 270: ...3 89 Confidential 10 Disconnect the Connector from the ADF motor Fig 3 112 Drive frame ASSY ADF motor Connector ...
Страница 280: ...3 99 Confidential 3 Remove the LCD from the Back light module Fig 3 128 Back light module LCD 3a 3b ...
Страница 359: ...3 178 Confidential 3 Disconnect the Connector from the Waste toner sensor Fig 3 262 Connector Waste toner sensor ...
Страница 381: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 397: ...Confidential CHAPTER 5 SERVICE FUNCTIONS ...
Страница 405: ...5 6 Confidential Black and white scanning First side Fig 5 1 ...
Страница 406: ...5 7 Confidential Black and white scanning Second side Fig 5 2 ...
Страница 407: ...5 8 Confidential Color scanning First side Fig 5 3 ...
Страница 408: ...5 9 Confidential Color scanning Second side Fig 5 4 ...
Страница 433: ...5 34 Confidential Cover page sample Fig 5 17 End page sample Fig 5 18 ...
Страница 440: ...5 41 Confidential Inter color position alignment adjustment chart Fig 5 22 ...
Страница 447: ...5 48 Confidential Fig 5 25 ...
Страница 450: ...5 51 Confidential Color test pattern Fig 5 27 MCYK Y C K M YCMK_ _A ...
Страница 470: ...Confidential CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Страница 472: ...6 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram 1 3 ...
Страница 473: ...6 2 Confidential High voltage Power Supply PCB Circuit Diagram 2 3 ...
Страница 474: ...6 3 Confidential High voltage Power Supply PCB Circuit Diagram 3 3 ...
Страница 475: ...6 4 Confidential Low voltage Power Supply PCB Circuit Diagram 100V ...
Страница 476: ...6 5 Confidential Low voltage Power Supply PCB Circuit Diagram 200V ...
Страница 477: ...6 6 Confidential NCU PCB Circuit Diagram U S A Canada ...
Страница 478: ...6 7 Confidential NCU PCB Circuit Diagram Europe Oceania ...
Страница 479: ...6 8 Confidential NCU PCB Circuit Diagram China Asia South Africa Gulf ...
Страница 481: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Страница 523: ...Confidential APPENDIX 1 SERIAL NUMBERING SYSTEM ...
Страница 527: ...Confidential APPENDIX 3 INSTALLING THE MAINTENANCE DRIVER ...
Страница 531: ...App 3 4 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...